\begin{table}[!htbp]
  \centering
  \small % Adjust font size
  \captionsetup{width=0.9\textwidth} % Adjust caption width
  \resizebox{0.9\textwidth}{!} % Scales table within width
  \begin{threeparttable}
    \caption{\textbf{Effects of any IVR call and effects of full IVR treatment on individual citizen outcomes}}
    \label{tab:hh_results}
    \begin{tabular}{l c c c c c}
      \toprule
      & \multicolumn{1}{p{1.2in}}{\centering Control mean: no call} 
      & \multicolumn{2}{p{2in}}{\centering ITT: any call} 
      & \multicolumn{2}{p{2in}}{\centering ITT: full responsive treatment} \\
      
      & \multicolumn{1}{p{1.2in}}{\centering \{H0\}} 
      & \multicolumn{2}{p{2in}}{\centering \{H1, H2\} vs. \{H0\}} 
      & \multicolumn{2}{p{2in}}{\centering \{H2R\} vs. \{H0\}} \\
      
      \cmidrule(lr){2-2} \cmidrule(lr){3-4} \cmidrule(lr){5-6}
      Outcome indices & \multicolumn{1}{c}{$\mu$} & \multicolumn{1}{c}{$\tau$} & \multicolumn{1}{c}{N} 
      & \multicolumn{1}{c}{$\tau$} & \multicolumn{1}{c}{N} \\
      \midrule
      
      \textbf{Incumbent evaluations index} & 0.000 & -0.009 & 13757 & -0.016 & 6539 \\
      & (1.000) & (0.009) & -- & (0.013) & -- \\
  
      \textbf{Political participation index} & 0.000 & -0.020 & 13780 & 0.004 & 6551 \\
      & (1.000) & (0.016) & -- & (0.025) & -- \\
  
      \textbf{Prospects for accountability index} & 0.000 & 0.004 & 13759 & 0.025 & 6539 \\
      & (1.000) & (0.017) & -- & (0.026) & -- \\
  
      \bottomrule
    \end{tabular}
    \begin{tablenotes}
      \item \textit{Notes:} \pvalnote \robsenote
      \item \hhpapnote Because our preferred specification includes pre-treatment covariates and the baseline measure of the outcome may have some missingness and because there is some missingness on the outcomes themselves, the sample sizes in the tables do not represent the full $13,988$ individuals from whom we collect both baseline and endline data.
      \item The letters in braces refer to the experimental groups identified in Figure~\ref{fig:exp_design}.
    \end{tablenotes}
  \end{threeparttable}
  }
  \end{table}
